Android Device Monitor

Android Device Monitor is a standalone tool that provides a UI for several
Android app debugging and analysis tools.

However, most components of the Android Device Monitor are deprecated in
favor of updated tools available in Android Studio 3.0 and higher. The table
below helps you decide which developer tools you should use.

Android Device Monitor component

What you should use

Dalvik Debug Monitor Server (DDMS)

This tool is deprecated. Instead, use
Android
Profiler in Android Studio 3.0 and higher to profile your
app's CPU, memory, and network usage.

Start Android Device Monitor

To start the standalone Device Monitor application, enter the following on the
command line in the android-sdk/tools/ directory:

monitor

You can then link the tool to a connected device by selecting the device
from the Devices pane. If you have trouble viewing panes or windows,
select Window > Reset Perspective from the menu bar.

Note: Each device can be attached to only one debugger
process at a time. So, for example, if you are using Android Studio to debug
your app on a device, you need to disconnect the Android Studio debugger from
the device before you attach a debugger process from the Android Device
Monitor.